Granules are in light yellow and come in cylinder and round shape, with slight fragrance. They absorb moisture easily and are easily decomposed by microbes. They are anti-static. The processing temperature of them is lower than that of conventional plastic. They are easily colored. Such resin is a kind of additive which should be blended with polyolefin materials like PE, PP, PVA, EVA, etc. to process finish products. It can be 100% degraded within 2 to 2.5 years in the laboratory conditions.

Product Testing：

●The degradation rate in 100 days is up to the adding ratio of it.

●Biodegradation can be achieved when blended with conventional plastic, like PE, PP, PVA, EVA, etc.

Properties and Data:

Testing Item

Standard

Unit

Result

Appearance

Light Yellow

Density

GB 1033

g/ cm3

1.10 – 1.25

Moisture Content

%

0.6– 1.5

Melt Flow Index

GB3682

g/10 min

0 - 2

Tear strength

GB 1040

MPa

≥15

Elongation

GB 1040

%

≥300

Bio Substances Content

%

≥90

n-hexane Extracts

GB/T5009.58

%

≤4.0

Rockwell hardness

GB9342

R gauge

Softening point

GB/1633

ºC

>65

Degradation rate in 100days

Degradation rate is affected by the adding ratio.

The data for tensile strength and elongation refer to that of finished film products.

Common film blowing extruder, sheet extruder, bag making machine, printers, and heat sealing machines are all can be used.

Processing Technology：

●Best results will be achieved with a screw L/D ratio ≥ 28:1. The blow-up ratio should be more than 1:3 to obtain the maximum production yield and the best quality.

●LT-M-502F can be blown with LDPE/LLDP, E. It needs to contain 20-45% of LT-M-502F when blowing.

●Newly made film feels brittle, , or crispy. Its elongation is low. This is due to severe dehydration during production. Therefore, the film needs to be settled for a 24- hour curing period to regain elongation and anti-tear strength before being used to make finish products, e.g. bag-making or printing.

●The minimum thickness of film made of such material can be 10 microns.

Remarks：

● The price of LT-M-501F is lower than that of PE(LLDPE and HDPE) and PP, which is good to cut down the cost.

●Due to the high starch content, the resin easily absorbs moisture. So it needs to be stored in a dry environment. The package should also be sealed properly to prevent the ingress of moisture.

●In case the resin is damp, it should be dried for 2 hours at 80ºC.

●Its processing temperature is 5ºC to 10ºC lower than that of PE. During processing, the temperature is correct when corn starch fragrance can be smelled at the hopper.

●It can be easily decomposed into soil friendly substances in microbial environment.